84085812 has 36 divisors (see below), whose sum is σ = 217497280. Its totient is φ = 27376272.

The previous prime is 84085789. The next prime is 84085829. The reversal of 84085812 is 21858048.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25612 + ... + 28707.

Almost surely, 2^84085812 is an apocalyptic number.

It is an amenable number.

84085812 is an abundant number, since it is smaller than the sum of its proper divisors (133411468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84085812 is a wasteful number, since it uses less digits than its factorization.

84085812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54372 (or 54367 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 84085812 is about 9169.8316233178. The cubic root of 84085812 is about 438.1009962884.

The spelling of 84085812 in words is "eighty-four million, eighty-five thousand, eight hundred twelve".